FN AR-15 14.7" 1:7 CARBINE GAS M4Upgrade your AR 15 platform with the FN America 14. 7" Button Rifled M4 Profile Barrel. This mil spec barrel is machined from the same high grade Chrome Moly Vanadium steel used in FN's machine gun barrels, ensuring exceptional durability and accuracy. The button rifling process creates a consistent bore diameter for improved precision. The M4 profile offers reduced weight forward of the gas block, enhancing handling characteristics. The carbine
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